Optex SC-U1 Operation Manual page 41

If you selected an item for alarm output, set the following items additionally.
4
Item
Trigger
Active Level
Hysteresis
On Delay
Off Delay
Example of operation when High Alarm (upper limit trigger) is set
High
Measurement
value
Active level
(Active level) -
(Hysteresis)
Low
ON
Alarm
output
OFF
For alarm output, set High Alarm (upper limit trigger) or
Low Alarm (lower limit trigger).
• High Alarm (upper limit trigger)
Alarm condition is met when a measurement value
exceeds the active level
• Low Alarm (lower limit trigger)
Alarm condition is met when a measurement value falls
under the active level
A measurement value can be set to activate On delay.
The hysteresis can be set to cancel the alarm output.
Specify a time period to output alarm after a measurement
value exceeds the active level.
Specify a time period to cancel alarm output after a
measurement value falls under (or exceeds) the alarm
hysteresis.
As the time period when
measurement values are
higher than the active level is
shorter than the On delay,
alarm output is not activated.
On delay
Description
As the time period when
measurement values are
higher than the active level
exceeds the On delay,
alarm output is activated.
On delay
Alarm output
Alarm is
output.
Refer to
P.42
P.42
P.43
P.44
P.45
As the time period when
measurement values are lower
than the alarm hysteresis
exceeds the Off delay, alarm
output is canceled.
Off delay
Alarm is
canceled.
41